January weather forecast
Heppner, OR

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Weather in January

January, like December, in Heppner, Oregon, is another cold winter month, with an average temperature varying between 28.2°F (-2.1°C) and 39.7°F (4.3°C).

Temperature

The commencement of January brings an average high-temperature of a still wintry 39.7°F (4.3°C), marking an inconsequential divergence from December. January's average low-temperature reading settles at a freezing cold 28.2°F (-2.1°C).

Humidity

The most humid month in Heppner is January, with an average relative humidity of 79%.

Rainfall

In Heppner, in January, it is raining for 14 days, with typically 1.54" (39mm) of accumulated precipitation. In Heppner, during the entire year, the rain falls for 131.9 days and collects up to 13.54" (344mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Heppner. In Heppner, in January, during 6.1 snowfall days, 3.78" (96mm) of snow is typically accumulated. In Heppner, during the entire year, snow falls for 31.3 days and aggregates up to 18.54" (471mm) of snow.

Daylight

The average length of the day in January in Heppner, Oregon, is 9h and 13min.
On the first day of the month, sunrise is at 7:37 am and sunset at 4:25 pm. On the last day of January, in Heppner, sunrise is at 7:20 am and sunset at 5:03 pm PST.

Sunshine

The months with the least sunshine are January and February, with an average of 5.3h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, a regular UV index of 2 translates into these guidelines:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

Is it cold in Heppner during January?

January temperatures vary between a high-temperature of 39.7°F (4.3°C) and a low-temperature of 28.2°F (-2.1°C).

What is the most humid month in Heppner?

The most humid month in Heppner, Oregon, is January, with an average relative humidity of 79%.

What is the average humidity in January in Heppner?

In Heppner, Oregon, the average relative humidity in January is 79%.

How many days does it rain in January in Heppner?

In Heppner, Oregon, in January, during 14 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

How many days does it snow in January in Heppner?

In January, it is snowing for 6.1 days. Throughout January, 3.78" (96mm) of snow is accumulated.

How many hours of daylight does Heppner have in January?

In Heppner, Oregon, the average day length in January is 9h and 13min.

When are sunrise and sunset in January in Heppner?

On the first day of January in Heppner, Oregon, sunrise is at 7:37 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:03 pm PST.

What is the month with the least sunshine in Heppner?

January and February, with an average of 5.3h of sunshine, are months with the least sunshine.

How long on average sun shines in January in Heppner?

The average sunshine duration in January is 5.3h.

When is the lowest UV index in Heppner?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Heppner.

What is the UV index intensity in January in Heppner?

In Heppner, Oregon, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Heppner, OR

Average temperature in January - Heppner, OR
  • Average high temperature in January: 39.7°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (37.9°F).

  • Average low temperature in January: 28.2°F

The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).

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Average pressure in January
Heppner, OR

Average pressure in January - Heppner, OR
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

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Average wind speed in January
Heppner, OR

Average wind speed in January - Heppner, OR
  • Average wind speed in January: 7.8mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is September (7.2mph).

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Average humidity in January
Heppner, OR

Average humidity in January - Heppner, OR
  • Average humidity in January: 79%

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (39%).

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Average rainfall in January
Heppner, OR

Average rainfall in January - Heppner, OR
  • Average rainfall in January: 1.54"

The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in January
Heppner, OR

Average rainfall days in January - Heppner, OR
  • Average rainfall days in January: 14 days

The month with the highest number of rainy days is March (17 days).
The month with the least rainy days is August (4.1 days).

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Average snowfall in January
Heppner, OR

Average snowfall in January - Heppner, OR
  • Average snowfall in January: 3.78"

The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in January
Heppner, OR

Average snowfall days in January - Heppner, OR
  • Average snowfall days in January: 6.1 days

The month with the highest number of snowfall days is December (9.2 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Heppner, OR

Average daylight in January / Average sunshine in January - Heppner, OR
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in January: 5h and 2min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 5h and 18min).

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Average sunshine days in January
Heppner, OR

Average sunshine days in January - Heppner, OR
  • Average sunshine days in January: 13.3 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (9.5 days).

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Average UV index in January
Heppner, OR

Average UV index in January - Heppner, OR
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Heppner, OR

Average cloud cover in January - Heppner, OR
  • Average cloud cover in January: 46

The months with the most cloud cover are January and February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in January
Heppner, OR

Average visibility in January - Heppner, OR
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Heppner, Oregon, USA

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